Standard Flex Straw Cap - Black

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For hydration on the go - Hydro Flask's leakproof, insulated Flex Straw Cap can be added to your favourite Standard Mouth Hydro Flask bottle to easily enjoy cold hydration anywhere.

The internal straw is easy to trim to fit your favourite Hydro Flask model. The Flex Strap makes your bottle easy to transport and comfortable to carry, and the cap features Honeycomb™ Insulation for maximum temperature retention. Most importantly, it's leakproof when closed so you can reliably sip and transport your refreshment without worry

  • BPA-Free & Toxin-Free
  • Removable components for easy cleaning
  • Dishwasher safe
  • Not intended for use with carbonated beverages


            Hydro Flask was founded in 2009 by Travis Rosbach and Cindy Weber, due to their dissatisfaction with commercial water bottles, originally and formally known as Steel Technologies LLC. Originally based in Bend, Oregon they enjoyed early success at local farmers markets - especially among the outdoor recreation community there. Hydro Flask make thoughtful, beautifully designed water bottles and reusable gear that will help you reduce reliance on disposable plastic and be with you through every day as well as out on the trail.